ELIZA

return kwic search for used to out of >500 occurrences
298981 occurrences (No.78 in the rank) during 5 years in the PubMed. [cache]

81) Forced gradient tracer tests between two boreholes can be used to study contaminant transport processes at the small field scale or investigate the transport properties of an aquifer.

--- ABSTRACT ---

PMID:23895143 DOI:10.1111/gwat.12101

2015 Ground water

* A method for conducting simultaneous convergent tracer tests in multilayered aquifers.

- Forced gradient tracer tests between two boreholes can be used to study contaminant transport processes at the small field scale or investigate the transport properties of an aquifer. Full depth tests, in which tracer samples are collected just from the discharge of the abstraction borehole, often give rise to breakthrough curves with multiple peaks that are usually attributed to different flow paths through the aquifer that can rarely be identified from the test results alone. Tests in selected levels of the aquifer, such as those between packer-isolated sections of the boreholes, are time consuming, expensive; and the identification of major transport pathways is not guaranteed. We present a method for simultaneously conducting multiple tracer tests covering the full depth of the boreholes, in which tracer sampling and monitoring is carried out by a novel multilevel sampling system allowing high frequency and cumulative sampling options. The method is applied to a tracer test using fluorescein conducted in the multilayered sandstone aquifer beneath the city of Birmingham, UK, producing six well-defined tracer breakthrough curves.

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[frequency of next (right) word to used to]

(1)28 assess	(20)5 design	(39)3 establish	(58)2 find
(2)28 identify	(21)5 increase	(40)3 observe	(59)2 fit
(3)23 evaluate	(22)5 inform	(41)3 prevent	(60)2 form
(4)20 study	(23)5 obtain	(42)3 solve	(61)2 further
(5)17 estimate	(24)5 quantify	(43)3 validate	(62)2 gain
(6)17 measure	(25)5 reconstruct	(44)2 accurately	(63)2 help
(7)16 determine	(26)4 calculate	(45)2 address	(64)2 improve
(8)16 examine	(27)4 characterize	(46)2 amplify	(65)2 make
(9)12 explore	(28)4 confirm	(47)2 avoid	(66)2 match
(10)10 treat	(29)4 construct	(48)2 be	(67)2 optimize
(11)9 analyze	(30)4 illustrate	(49)2 conduct	(68)2 perform
(12)8 develop	(31)4 reduce	(50)2 create	(69)2 prepare
(13)8 investigate	(32)4 screen	(51)2 demonstrate	(70)2 produce
(14)8 predict	(33)4 simulate	(52)2 derive	(71)2 promote
(15)7 collect	(34)4 verify	(53)2 describe	(72)2 recruit
(16)7 compare	(35)3 classify	(54)2 distinguish	(73)2 represent
(17)7 test	(36)3 compute	(55)2 explain	(74)2 select
(18)6 analyse	(37)3 control	(56)2 extrapolate
(19)6 detect	(38)3 define	(57)2 facilitate

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--- WordNet output for used --- =>1.〜に慣れて, 2.用いられた, 中古の Overview of verb use The verb use has 6 senses (first 3 from tagged texts) 1. (603) use, utilize, utilise, apply, employ -- (put into service; make work or employ for a particular purpose or for its inherent or natural purpose; "use your head!"; "we only use Spanish at home"; "I can't use this tool"; "Apply a magnetic field here"; "This thinking was applied to many projects"; "How do you utilize this tool?"; "I apply this rule to get good results"; "use the plastic bags to store the food"; "He doesn't know how to use a computer") 2. (12) use, habituate -- (take or consume (regularly or habitually); "She uses drugs rarely") 3. (8) use, expend -- (use up, consume fully; "The legislature expended its time on school questions") 4. use -- (seek or achieve an end by using to one's advantage; "She uses her influential friends to get jobs"; "The president's wife used her good connections") 5. practice, apply, use -- (avail oneself to; "apply a principle"; "practice a religion"; "use care when going down the stairs"; "use your common sense"; "practice non-violent resistance") 6. use -- (habitually do something (use only in the past tense); "She used to call her mother every week but now she calls only occasionally"; "I used to get sick when I ate in that dining hall"; "They used to vacation in the Bahamas") Overview of adj used The adj used has 3 senses (first 3 from tagged texts) 1. (4) used -- (employed in accomplishing something; "the principle of surprise is the most used and misused of all the principles of war"- H.H.Arnold & I.C.Eaker) 2. (1) exploited, ill-used, put-upon, used, victimized, victimised -- (of persons; taken advantage of; "after going out of his way to help his friend get the job he felt not appreciated but used") 3. (1) secondhand, used -- (previously used or owned by another; "bought a secondhand (or used) car") --- WordNet end ---